Merge branch 'collectd-5.7' into collectd-5.8

[collectd.git] / src / unixsock.c

diff --git a/src/unixsock.c b/src/unixsock.c
index 8ccde80..99e39ee 100644 (file)
--- a/src/unixsock.c
+++ b/src/unixsock.c
@@ -134,7 +134,13 @@ static int us_open_socket(void) {
     const char *grpname;
     struct group *g;
     struct group sg;
-    char grbuf[2048];
+
+    long int grbuf_size = sysconf(_SC_GETGR_R_SIZE_MAX);
+    if (grbuf_size <= 0)
+      grbuf_size = sysconf(_SC_PAGESIZE);
+    if (grbuf_size <= 0)
+      grbuf_size = 4096;
+    char grbuf[grbuf_size];
 
     grpname = (sock_group != NULL) ? sock_group : COLLECTD_GRP_NAME;
     g = NULL;
@@ -143,7 +149,7 @@ static int us_open_socket(void) {
     if (status != 0) {
       char errbuf[1024];
       WARNING("unixsock plugin: getgrnam_r (%s) failed: %s", grpname,
-              sstrerror(errno, errbuf, sizeof(errbuf)));
+              sstrerror(status, errbuf, sizeof(errbuf)));
       break;
     }
     if (g == NULL) {